<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<style>
    /* 顶部导航 */
    .nav{
        width:100%;
        height: 30px;
        border-radius: 15px;
        font-size: 20px;
        color: #505050;
        background-image: url(../jpg/搜索.png);
        background-repeat: no-repeat;
        background-position: 10px;
    }
    /* 上导航 */
    .subnav{
       display: flex;
       justify-content: space-around;
       font-size: 20px;
       color: #505050;
    }
    .picture{
        height: 460px;
        width: 100%;
    }
    .content{
        margin-top: -360px;
        display: flex;
        flex-direction: column;
        align-items: center;
        line-height: 1px;
        color: white;
    }
    .content>img{
        height: 50px;
        width: 50px;
        position: relative;
        top: 50px;
        left: -70px;
    }
    .content p:nth-child(2){
        font-size: 40px;
        margin-top: 20px;
        margin-left: 25px;
    }
    .content p:nth-child(3){
        font-size: 20px;
        opacity: 0.6;
        margin-top: -5px;
        margin-left: 25px;
    }
    .content p:nth-child(4){
        font-size: 15px;
        margin-top: 10px;
        margin-left: 25px;
    }
    .content p:nth-child(5){
        font-size: 15px;
        margin-top: 10px;
        margin-left: 25px;
    }
    .content p:nth-child(6){
        font-size: 15px;
        margin-top: 10px;
        margin-left: 25px;
    }
    .content p:nth-child(7){
        font-size: 15px;
        margin-top: 10px;
        margin-left: 25px;
    }
    .text{
        height: 36px;
        width: 160px;
        background-color: #3685c6;
        text-align: center;
        line-height: 8px;
    }
    /* 专栏 */
    .columns{
        display: flex;
        justify-content: space-around;
        margin-top: 100px;
    }
    .columns>img{
        height: 100px;
        width: 170px;
    }
    .columns1{
        display: flex;
        justify-content: space-around;
        margin-top: -50px;
        margin-left: -15px;
        color: white;
    }
    /* 底部导航 */
    .bottomnav{
        height:5px;
        width: 100%; 
        background-color: #f8f8f8;
        display: flex;
        flex-wrap: wrap;
        justify-content:flex-start;
        margin-top: -5px;
    }
    .logo1{
        height: 50px;
        width: 50px;
        margin-top: 25px;
        margin-left: 25px;
    }
    .container{
        height: 20px;
        color: #505050;
        font-size:20px;
        text-align:center;
        margin-left: 28px;
        margin-top: 5px;
    }
</style>
<body>
    <!-- 顶部导航 -->
    <input class="nav" type="text" placeholder="      网易云课堂">
    <!-- 上导航 -->
    <div>
        <dl class="subnav">
            <dt>个性推荐</dt>
            <dt>课程</dt>
            <dt>微创业</dt>
        </dl>
    </div>
    <img class="picture" src="../jpg/ios.png">
    <!-- 文本内容 -->
    <div class="content">
        <img src="../jpg/s.png">
        <p>微专业</p>
        <p>SBECIALIZATION</p>
        <p>跟随知名企业的一线资深工程师、设计师，</p>
        <p>以及行业知名专家学习</p>
        <p>系统的掌握工作方法和技巧，获得全面的职业提</p>
        <p>升！</p>
        <div class="text">
            <p>查看所有微专业 ></p>
        </div>
    </div>
    <div class="columns">
        <!-- 专栏1 -->
        <img src="../jpg/视频介绍1.png">
        <!-- 专栏2 -->
        <img src="../jpg/视频介绍2.png">
    </div>
    <div class="columns1">
        <p><img src="../jpg/播放.png" width="18px" >观看视频介绍</p>
        <p><img src="../jpg/播放.png" width="18px" >观看视频介绍</p>
    </div>
    <!-- 底部导航 -->
    <div  class="bottomnav">
        <div>
            <img class="logo1" src="../jpg/首页.png" >
            <p class="container">首页</p>
        </div>
        <div>
            <img class="logo1"  src="../jpg/分类.png" >
            <p class="container">分类</p>
        </div>
        <div>
            <img class="logo1" src="../jpg/我的学习.png" >
            <p class="container">我的学习</p>
        </div>
        <div>
            <img class="logo1" src="../jpg/账号.png" >
            <p class="container">账号</p>
        </div>
</body>
</html>